Instead of basic word filtering or syntax analysis, we use the Recurrent Pattern Detection® engine from CYREN – which compares every email you receive to global spam traffic trends.

It can tell an email is spam because it has an identical fingerprint to millions of other emails being sent from different computers around the world – it's the one thing spam email can't change about itself: it's spammed.

As a result, it knows your key client's unique email isn't spam, but an email that's similar to millions being sent all around the world is – even if your contact uses explicit language and the spam contains only commonplace business terms.

With Recurrent Pattern Detection

Even if spambots randomize portions of the message or paste grammatically correct content into the message – Exclaimer Anti-spam still spots the similarities in data behind the visible message content.

You need the surest way to leave legitimate mail undisturbed. This Exchange anti-spam software uses a spam detection engine that only blocks what real email can never have – millions of near duplicates in thousands of other inboxes worldwide.

It can be repetitions in the header data, encoding and more – whether it's sent from thousands of different addresses, in a variety of languages, we can home in on whatever is being repeated and block it based on that.